探索了X射线照片密度与显微密度计信号电压之间的关系。
The relation between the optics density of the X ray and the output information voltage of micro densimeter is investigated.
通过观测CT照片密度变化，缩小自动冲洗套药疲劳度对CT照片密度的影响。
To revise the effects from fatigue extent of automatic developing solution on the film density by way of measuring density change of the brain ct films.
累进中性密度滤镜将保证你照片里的天空不会曝光过度。
A graduated neutral density filter will also help you make sure the sky isn't overexposed.
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